Absolutely - The Brain is the gold standard as far as I’m concerned when it comes to visually linking notes. I never got into using it, however, because it is TOO visual and the text features were too cumbersome.
4 or 5 years ago I tried to hack together a bunch of d3js code snippets to basically create a poor man’s Roam/Obsidian, being text-first with a filterable, customizable, zoomable, node-centering network map, but I didn’t have the capabilities to make it anything beyond a very crude alpha.
I’m delighted to see all these text-first tools coming out now, but the graphing capabilities are nothing short of unusable. I look forward to whatever progress is made on this front - but first the basics of the editor, linking, etc… need to get ironed out. The priority, after all is on linking the content, the text, the ideas of notes, not just the notes themselves.
But even in a good interface, like Roam, people tend to be focused on the latter - linking as many low-quality, meaningless notes as possible, instead of focusing on creating good notes/ideas first and then link them meaningfully. That’s user error though - and starts to get into notions of philosophy, ability to think, have perspective, have principles and frames of references, have an actual (worthwhile) goal that can help orient your efforts, know what is actually important, and leave the other 95% of your shower thoughts either unlinked or in the shower.